Lubricating apparatus



1,504,423 'H J. BQNEBERG LUBRICATING APPARATUS Aug." 12, 1924.

Filed April 10. 1923 r J a K3 a M 7 w 5 .V 2 W Z? J WM J m w w l 1 w w Wm PatentedAug. 12, 1924.

PATENT OFFICE;

HAROLD J. BONEBERG, OF BUFFALO, YORK.

LUBBICATING APPARATUS.

Application filed April 10, 1928. Serial No. 631,283.

To all whom it may concezm:

Be it known that I, HAROLD J. BONEBERG,

' a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented new and useful.

Improvements in Lubricating Apparatus, of which ,the following is a specification.

This invention relates to a lubricating apparatus which is more particularly adapt ed for use in public garages for in ecting grease into the various bearings of an automobile.

- One of the objects of the inventionis to provide a stationary apparatus of this character in which compressed air isemployed for expelling the grease from the same.

Other objects are to provide a simple and inexpensive lubricatin apparatus which is strong and durable 1n construction, and which is reliable and eflicient in operation.

In the accompanying drawings: Figure 1 is a vertical longitudinal section of a lubricating apparatus embodying my improvements. Figure 2 is a horizontal section, on

- a reduced scale, taken in the plane of line 2-2, Fig. 1. I

Similar characters ofreference refer to like parts in both figures.

The improved lubricating apparatus is mounted on a fixed base or support secured to the concrete flooring 11 by bolts 12- or other appropriate fastenings. The apparatus proper consists of an upri ht differential cylinder, designated generailly b the numeral 13, including a comparatively large working or compression cylinder 14 and a somewhat smaller supplemental cylinder or barrel 15 surmounting the latter in axial alinement therewith and forming a'container for receiving a lubricant, such as grease. The lower end of the working cylinder is closed by a flanged head 16 which also serves as a means for fastening the apparatus to the base 10, bolts 17 being employed for this purpose. This flanged head is preferably provided in its upper side with a threaded socket 18 and the opposing end of the cylinder 14 has an externally-threaded neck 19 adapted to engage said socket. Interposed between the opposing upper and lower ends of the respective cylinders 14, 15 is an intermediate head-or partition 20 which is externally threaded, as shown in Fig. 1 for securing it in place in the top of said firstnamed cylinder. In its upper side the intermediate head is provided with an internallythreaded socket 21 in which the lower end of the u per cylinder 15 is seated. The latter is c osed at its to by a suitable head 22 bolted or otherwise iastened to its flanged up er end.

perating in the differential cylinder is a diflerent-i-al piston including a main piston 23 and an auxiliary piston 24 arranged for sliding movement in the cylinders 14 and,

15, respectively. These istons may be cupshaped and are connected to move 1n unison by a rod 25 which passes freely through an opening 26 in the intermediate head 20.

The upper head 22 of the grease cylinder is provided with a filling opening 27 normally closed by a screw-plug 28 or other closure and a discharge passage 29 in which a suitable coupling 30 may be located for attaching thereto one end of a flexible hose 31. The other end of the latter is shown provided with a hollow coupling 32 adapted I) to be removably fitted over a bearing nipple 33 of well known construct-ion. An example of the type of hollow coupling employed is shown in United States Letters Patent No. 1,365,984, dated January 18, 1921 and granted to Arthur V. Gullborg.

The lower head 16 of the compression cylinder 14 is provided with an inlet 34 for admitting air under pressure and an air outlet or exhaust 35. Conduits 36, 37 are applied to the inlet and outlet, respectively, the former being adapted for connection with an air compressor, not shown, while the latter is provided at its end with a pet cook 38.

In order to permit the apparatus to function properly, the cylinder 14 is provided near its upper end with a vent 39.

An automobile requiring lubrication is brought within reach of the lubricating apparatus and compressed air is admitted to the. working cylinder of the latter which acts on the piston 23 therein to move it upwardly, the piston 24 moving in a corre sponding direction and forcing the grease from the barrel 15 into the flexible conduit char of the iiease from its barrel, at a comggratively h pressure, qthereby insuring. a thoroug lubrication of all the bearing points. w y

The capacity of the grease barrel is such that several automobiles may be lubricated from a single charge of grease. Furthermore, the work of the operator is reduced to a minimum, it being only necessary for him to connect and disconnect the hose 31 to and from the bearing nipples, as the grease is expelled automatlcally from the barrel.

'In addition to'these advantages, this lubricating apparatus is very strong and durable in construction, its parts being so organized that they may be readily dismembered when,

its upper end and provided at its lower end 1,504,4as' I with an external] -threaded neck, a head for the lower end of said cylinder attached to the supporting base and having a threaded socket in its upper side for receiving the threaded neck of said cylinder, a supplemental cylinder closed at its upper end surmounting said main cylinder and forming a container for the lubricant, an intermediate headlocatedbetween the op sing ends of said cylinders and engagin t e threaded end of the main cylinder, sai intermediate head having a socket in its'upper side for receiving the lower end of said supplemental cylinder, pistons slida'ble said cylinders, and a rod connecting said pistons and passing through an opening in the intermediate head, the closed upper end of said supplemental cylinder having a grease-filling opening and a grease-discharge opening, and the lower head of said main cylinder having an inlet for compressed air and an air outlet.

HAROLD J. BONEBERG. 

